Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income	$ 80.4	$ 155.7
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	46.9	37.9
Distributions from unconsolidated affiliates	45.0	45.8
Equity in income of unconsolidated affiliates	(37.8)	(38.3)
Stock-based compensation	7.2	8.6
Deferred income taxes	4.9	33.2
Amortization of operating lease assets	1.4	2.2
Gain on sale of Arlington	0.0	(114.0)
Other	1.7	0.8
Changes in operating assets and liabilities:
Income taxes	17.0	19.9
Deferred revenue	80.1	81.8
Other assets and liabilities	7.9	(17.7)
Net cash provided by operating activities	254.7	215.9
Cash flows from investing activities:
Capital maintenance expenditures	(12.4)	(11.8)
Capital project expenditures	(142.6)	(122.9)
Proceeds from sale of Arlington	0.0	195.7
Other	1.6	(6.5)
Net cash (used in) provided by investing activities	(153.4)	54.5
Cash flows from financing activities:
Proceeds from borrowings under long-term debt obligations	355.5	615.5
Repayments of borrowings under long-term debt obligations	(266.7)	(797.5)
Payment of dividends	(28.6)	(26.7)
Repurchase of common stock	(141.7)	(0.5)
Taxes paid related to net share settlement of stock awards	(10.4)	(11.3)
Debt issuance costs	0.0	(2.5)
Change in bank overdraft	(8.6)	(14.2)
Other	(0.6)	(0.5)
Net cash used in financing activities	(101.1)	(237.7)
Net increase in cash, cash equivalents and restricted cash	0.2	32.7
Cash, cash equivalents and restricted cash, beginning of period	221.8	204.7
Cash, cash equivalents and restricted cash, end of period	222.0	237.4
Supplemental disclosures of cash flow information:
Cash paid for interest	50.8	55.5
Cash paid for income taxes	0.2	0.8
Cash received from income tax refunds	0.1	0.7
Schedule of non-cash operating, investing and financing activities:
Property and equipment additions included in accounts payable and accrued expenses	83.9	54.2
Right-of-use assets obtained in exchange for lease obligations in operating leases	0.1	0.5
Right-of-use assets obtained in exchange for lease obligations in finance leases	3.6	23.6
Repurchase of common stock included in accrued expense and other current liabilities	$ 4.0	$ 0.0